Flutter CupertinoActivityIndicator Widget
Flutter CupertinoActivityIndicator displays an iOS style activity indicator that spins clockwise. It can also be used to display progress of an activity.
Syntax
A simple CupertinoActivityIndicator.
CupertinoActivityIndicator()
Example
Flutter Application with a CupertinoActivityIndicator widget. We do not set any property of this widget, and the default values take affect.
main.dart
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
void main() => runApp(const MyApp());
/// main application widget
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
static const String _title = 'Flutter Application';
@override
Widget build(BuildContext context) {
return MaterialApp(
title: _title,
home: Scaffold(
appBar: AppBar(title: const Text(_title)),
body: const MyStatefulWidget(),
),
);
}
}
/// stateful widget that the main application instantiates
class MyStatefulWidget extends StatefulWidget {
const MyStatefulWidget({Key? key}) : super(key: key);
@override
State<MyStatefulWidget> createState() => _MyStatefulWidgetState();
}
/// private State class that goes with MyStatefulWidget
class _MyStatefulWidgetState extends State<MyStatefulWidget> {
@override
Widget build(BuildContext context) {
return Center(
child: Column(
children: const <Widget>[
SizedBox(height: 30,),
CupertinoActivityIndicator()
],
),
);
}
}
Screenshot
![](https://googleflutter.com/wp-content/uploads/2021/11/flutter-cupertino-activity-indicator-example.png)